Luster
early 16th century: from French, from Italian lustro, from the verb lustrare, from Latin lustrare ‘illuminate’.
wiktionary
From Middle French lustre, from Old Italian lustro, from Latin lustrō(“I brighten”), akin to lux(“light”).
From Middle English lustre, from Latin lustrum, from Old Latin *loustrom, of uncertain origin. More at lustrum.
From lust + -er.
etymonline
luster (n.1)
"gloss, radiance, quality of shining by reflecting light," 1520s, from French lustre "gloss, radiance" (14c.), common Romanic (cognates: Spanish and Portuguese lustre, Rumanian lustru, Italian lustro "splendor, brilliancy"), a noun ultimately from Latin lustrare "spread light over, brighten, illumine," which is related to lustrum "purification" (from PIE *leuk-stro-, suffixed form of root *leuk- "light, brightness").
Especially "quality of glossiness or radiance in a textile material or fabric." Figurative meaning "radiant beauty" is from c. 1600; that of "splendor, renown" is from 1550s. Lusterware, also lustre-ware, "stoneware or crockery having surface ornamentations in metallic colors," is attested by 1820.
luster (n.2)
"one who feels intense longing desire," 1590s, agent noun from lust (v.).
